The nurse is providing care for a pregnant client in her second trimester. Glucose tolerance test results show a blood glucose level of 160 mg/dL. The nurse should anticipate that the client will need to（）

A. start using insulin.

B. start taking an oral antidiabetic drug.

C. monitor her urine for glucose.

D. be taught about diet.

只有市场本身可以知道市场研究方向。